Andrew j



No. 618,078. Patented Jan. 24, I899.

A. J. ENGLISH.

HYDROGARBON VAPOR LAMP.

(Application filed Sept. 25, 1897.)

(No Model.)

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UNITED STATES PATENT OFFICE.

ANDREIV J. ENGLISH, OF CINCINNATI, OHIO, ASSIGNOR TO THE PERFECTIONLIGHT COMPANY,

OF SAME PLACE.

HYDROCARBON-VAPOR LAM SPECIFICATION forming part of Letters ?atent No.618,078, dated January 24, 1899". Application filed September 25,1897.senile. 653,070. (No model.)

To all whom it may concern.-

Be it known that 1, ANDREW J. ENGLISH, a citizen of the United States,residing at Cincinnati, Ohio, have invented new and useful Improvementsin Hydrocarbon-Vapor Lamps,

of which the following is a specification.

My invent-ion relates to vapor-lamps, its object being to provide asimple, cheap, and eflicient lamp and method of operating the [0 same inwhich the vapor of a hydrocarbon liquid may be employed with safety toprovide illumination in connection with an incandescent mantle.

To this end my invention consists in a portable vapor-lamp embodyingcertain details of construction and operation of parts to be hereinafterdescribed, and particularly pointed out in the claims. a

My invention is illustrated in the accompanying drawing, showing thelamp in sectional elevation.

Referring now to the drawing, A designates a reservoir of any convenientform, in which are two apertures, one of which is occupied by theoil-feed tube B and the other by a tight-fitting screw-plug P, bothpresently to be described.

The reservoir A is mounted on a suitable base A and is encircled belowby the mixingtube C, which passes beneath the reservoir and terminatesin front in a vertical-Bunsen burner o-,with incandescent mantle m,globe g, and the usual attachments. At the rear the tube C is extendedupward and curves 5 forward above the globe g, having its mouth inclosedin a perforated air-screen a".

The oil-feed tube B enters the reservoir A to near the bottom, where ithas a screenmouth I). It extends upward behind the burner to avalve-chamber '0, provided with a needle-valve i), (such as ordinarilyemployed in gasolene stove burners,) which chamber is projected forwardand slightly upward, terminating in a curved retort b turnedhorizontally backward into the air-screen cZwhere it is terminated by adischarge-nozzle 6 directing the gas into the receiving-mouth of themixing-tube C.

The mixing-tube O by its relatively great length effects a perfectadmixture of the air and vaporized gasolene, while at the same time itsposition makes it a convenient handle by which the lamp may be carried.

The screw-plug I, besides its ordinary function as a stopper of thefilling-orifice, is perforated and carries an independent valve 19,seated at the under side, opening inward and normally held to place by acoiled spring 3. The plug P is countersunk for the convenient attachmentof an air-pump t, as indicated by dotted lines, (or the plug may besufficiently elongated to constitute the barrel of an airpump formingpart of the lamp structure, as also indicated by dotted lines,) and bythis means sufficient air is injected into the reser- 6 5 voir tomaintain the slight pressure required to lift the oil to the retort 12The air-pump may be embodied in the reservoir as part of the structure,if desired. A suitable indicatingfioat k may be arranged to project itsstem upward into the orifice of the plugP as a guide in filling.

The mode of operation is as follows: The reservoir A being charged witha hydrocarbon liquid, such as coal-oil or gasolene and air underpressure, the retort b is heated in any convenient manner and a supplyof gasolene admitted thereto to start the operation. The jet ofvaporized gasolene issuing from the retort Z2 carries air with it intothe tube C, and the passage through said tube effects athorough mixtureof same. The combined gases are lighted at the mantle in the usualmanner, producing brilliant incandesence, the degree of which isregulated by the 8 5 valve v and the retort 11 being located in theupward path of the products of comb ustion rising from the mantle m,theaction once started continues as long as the air-pressure Within thereservoir A is sufficient to feed the gasoa lene to the retort W, or solong as the supply of gasolene lasts, or until the valve 1: is shut off.

A feature of importance to the durability of the lamp in continued useis the discharging-orifice of the retort b". For this purpose ordinarymetals are not serviceable for any length of time, as the stream ofheated vapor issuing through the minute orifice is apt to corrode themetal and clog the orifice, and in removing the obstruction the orificeis so enlarged as to destroy the efficiency of action. Among metals Iderive the best results from aluminium, but upon the whole I find itbest to fit the discharge end of the retort with a plug 6 of lava,perforated with an exceedingly minute orifice and hardened by intenseheat before use. As thus prepared and used this material suffers nocorrosion and does not wear appreciably by service.

I claim as my invention and desire to secure by Letters Patent of theUnited States 1. In a portable vapor-lamp, the combination with thereservoir of an air-mixing conduit having an upright end supporting aburner, an open end located in a plane above said burner and anintermediate curved portion secured to said reservoir, an oil-feed pipecommunicating with the interior of said reservoir, a vaporizer connectedwith said pipe and located immediately above said burner and having adischarge-orifice in line with the open end of the air-mixing conduit,whereby the vapor generated in said vaporizer may discharge directlyinto said air-mixing conduit, and a valve controlling the supply of oilto said vaporizer, substantially as described.

2. In a portable vapor-lamp, the combination with the reservoir of anair-mixing conduit having an upright end supporting a burner, an openend located in a plane above said burner and an intermediate curvedportion secured to said reservoir, an oil-feed pipe communicating withthe interior of said reservoir and extending above the same, a vaporizerconnected with said pipe and located immediately above said burner andhaving a discharge-orifice in line with the open end of the air-mixingconduit, whereby the vapor generated in said vaporizer may dischargedirectly into said air-mixing conduit, a valve controlling the supply ofoil to said vaporizer, and means for compressing air within saidreservoir, substantially as described.

3. In a vapor-lamp, the combination with the reservoir, of an air-mixingconduit comprising a tube having an upright end supporting a burner, acentral curved portion extending beneath and attached to the reservoirand an upright portion affording a handle, said second upright portionextending upward to a point above the burner and being curved inward toextend in a horizontal plane and having an outer open end, an oilfeedpipe communicating with the reservoir and extending upward therefrom, avaporizer connected with said pipe and located immediately above saidburner and having a discharge-orifice in line with the open end of theair-mixing conduit, whereby the vapor generated in said vaporizer maydischarge into said air-mixing conduit, a valve controlling the supplyof oil to said vaporizer, and means for compressing air within saidreservoir, substantially as described.

4. In a lamp of the character indicated, a Bunsen burner having itssupply-pipe extending downward therefrom in a U curve and presenting itsreceiving-mouth adjacent to and above the burner, in combination withthe reservoir arranged in, or in connection with, the lower bight of themixing-tube or supply-pipe, the feed-pipe extending upward and outwardand the vaporizing-retort arranged above the burner to discharge intothe mouth of the mixing-tube or supply-pipe, substantially as described.

5. In a vapor-lamp, the combination with the reservoir, of an air-mixingconduit connected at one end with a burner and having an open endlocated in a plane above said burner, an oil-feed pipe communicatingwith the interior of said reservoir, avaporizer comprising a tubeconnected at one end with said pipe and bent upon itself to provide agenerating-chamber immediately above said burner and from said bentportion havingarearward extension provided with a discharge-orifice inline with the open end of the air mixingconduit, whereby the vaporgenerated in said vaporizer maydischarge into said air-mixing conduit,and a valve controlling the supply of oil to said vaporizer,substantially as described.

6. In a vapor-lamp, the combination with the burner, of a reservoir, anoil-feed pipe communicating with the interior thereof and rising upwardtherefrom and having a laterally-extending, upwardly-inclined portionaffording a valve-chamber and provided with a vaporizer comprising aterminal extension carried into the path of the products of com bustionof the burner and bent backward to extend in a horizontal direction andat the outer end of said horizontal portion having a dischargeorifice, avalve in said valve chamber, and a tube supporting at one end saidburner, and having its opposite open end in line with thedischarge-orifice of said vaporizer, whereby the vapor generated in thevaporizer may be discharged into said tube and together with the airdrawn in thereby and mixed with said vapor be conveyed by said tube tothe burner, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

ANDREW J. ENGLISH. WVitnesses:

L. M. HosEA, HERBERT J. ALLSUP.

